Cinematographic display apparatus.



v. L. P. A. M. MANsFELn.

CINEMATOGRAPHIC DISPLAY APPARATUS.

. APPLICATION FILED NOV. 26. 1913. 1,166,701. Patented .1311.4, 1916.

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CINEMATOGRAPHIC DISPLAY APPARATUS.

APPLICATION FILED Nov. 26. 1913.

1,166,701. Patented Jan. 4, 1916.

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CINEMATOGRAPHIC DISPLAY APPARATUS.

APPLICATION FILED NOV. 26, 1913.

Patented J an. 4, 1916.

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v. L. P. A. M. MANSFELD.

CINEMATOGRAPHIC DISPLAY APPARATUS.

APPLICATION FILED NOV. 26, 1913.

Patented Jan. 4, 1916.

4 SHEETS-SHEET 4.

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UNITED STATES PATENT FFICE.

VICTOR- LUDWIG PHILIP? AUGUST MAXIFIILIAIHT IJANSFELD, OFBERLIN-STEGLITZ, GERMANY.

CINEMATOGRAPHIC DISPLAY APPARATUS.

Application filed Novoa-neer .f5-3, 19113.

To all whom t may concern.'

Be it known that I, Vieron IiUnwie IHILIPP AUGUST Maximum-m MaNsrnLD, asubject of the Ihnperor ot Germany, residing at Birkbuschstrasse 87,Berlin-Steglitz, in the Empire ot' Germany, have invented certain newand uset'ul Improvemei u: in Cinematographic Display Apparatus. of whichthe following is a specilication.

The present invention relates to n ns exhibiting pictures by projection,which consist of a plurality ci audience rooms contiguous to each other,in one of which audience rooms a translucent screen is arranged,reflecting means being associated with the said screen in such a mannerthat the images appearing on the back side of the screen may be seen inanother audience room.

The audience rooms may be arranged angularly or parallel to each other,or they may be located adjacent or in series or superposed. Y

In order to render the present invention more easily intelligiblereference is had to the accompanying drawings in which several modes ofembodying the invention are illustrated.

Figure l is a perspective View otl a grouping of nine rooms. Fig. 2 aplan of two rooms, grouped rectangularly to each other. Fig. 3 shows tworooms arranged side by side and Fig. 4 two rooms arranged partly side byside and partly one after the other. Figs. 5 and 6 two rooms arrangedpartly superposed and partly one after the other. Fig. 7 shows twosuper-posed rooms and Fig. 8 two rooms arranged at a pointed angleagainst each other. Figs. 9 to lll show various groupings of threeaudience rooms.

I will now describe my invention more fully and, as the most clear andsimple eX- ample, I take Fig. 2, which shows two rectangularly arrangedaudience rooms. According to this figure A and B are the two audiencerooms ois the projecting apparatus located at the rear end of the oneaudience room A. In the hatched room portion (common to both audiencerooms) a translucent projection screen o and planemirror c are arranged.The following rule gives good results for properly transferring thepictures into the audience room B: The mirror c is located at rightangles and symmetrically to the line h halving the angle formed by theouter walls of the two rec- Speccaten of Letters Eatent.

Patented Jan. 4C, 1916.

sei-iai no. 803,182.

tangular audience rooms. The translucent screen Y; is arranged exactlyvertically to the longitudinal direction of that room in which theprojection apparatus is positioned. Besides it is necessary that thetranslucent screen o is arranged so as to be as near to the mirror c aspossible. By this is effected that the spectators in the audience room Asee the pictures as usually on the Llront side of the translucent screeno. @n the rear side of s ld screen this picture will appear reverse ltrom the left to the right. The picture` then displayed upon the niirrorwill appear there properly again and is r-ilected into the audience roomB nndistorted and unshortened, also with directly readable writing' andprint.

I suppose the description of Fig. 2 will be quite snllicient to transmitthe necessary understanding of tie invention. It is evident thatsometimes the proiecting apparatus must he provided with two or moreobjectives, and that the translucent screen must be combined sometimeswith two mirrors in order to transfer the pictures into all the desiredcombinations of audience rooms.

It there are employed two mirrors according to Figs. 3. el, 5 and partlyin Figs. 10, 12, 14, in the audience room, in which the projectionapparatus is not located, the pictures will appear reversed from theleft to the right as on the haelt side ci the translucent screen.Besides the picture appears a little smaller and also a little darl-er,but neverthelees exactly sharp and on a whole just as good picture as onthe front side. The writing or print may be read te the spectators jorexample trom the iront side of the translucent screen by somebody, whoabides in the other wing room.

In certain cases it may not be desirable to arrange the rows oi seats atright angles to the longitudinal direction of the room, but in themanner shown in Fig. 8. In this case an ideal wing room is implied bywing room, the longitudinal direction ot which is at right angles to thelongitudinal direction of the rows of seats.

I claiml. Means for exhibiting pictures by projection, comprising aplurality ot audience rooms contiguous to each other, a translucentscreen at the end of one audience room and reflecting means associ-atedwith said screen,

whereby the images appearing on the back side thereof may be seen inanother audience room.

In an apparatus for displaying)` cinematographic pictures to be visiblein two audience roonis arranged at right angles, the combination et onesingle projection apparatus (L, located in the rear part of the oneaudience rooin, a translucent screen b, arranged at right angles to thissaid audience rooin and in line with the other audience room, and anon-transparent plane-mirror c arranged at an angle of 15o to and behindthe translucent screen, substantially as described.

In testimony whereof I afx niy signature in presence of two Witnesses.

VICTOR LUDWIG PHILIP? AUGUST MAXIMILIAN MANSFELI). Witnesses WOLDEMARIIAUi'r, HENRY I-IASPER.

Copies of this patent may be obtained for ve cents each, by addressingthe Commissioner of Patents. "Washington, B. C.

